Carbureter.



PATENTED FEB. 14, 1905.

C. L. MOHR.

CARBUREIER.` APPLIoATIon FILED MAY 18. 1904.

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/ ATToR/vfxf UNITED STATES Patented February 14, 1905.

PATENT OEEICE.

CHARLES L. MOHR, OF JANESVILLE, WISCONSIN, ASSIGNOR TO THE NATIONALLIGHT AND FUEL GAS COMPANY, OF JANESVILLE, WISCONSIN, A CORPORATION OFWISCONSIN.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 782,788, dated February14, 1905.

Application led May 16, 1904:. Serial No. 208,167.

T all wiz/071e it may concern,.-

Be it known that I, CHARLES L. MoHR, a citizen of the United States,residing at Janesville, county of Rock, and State of Wisconsin, haveinvented new and useful Improvements in Carbureters, of which thefollowing is a specification.

My invention relates to improvements in carbureters.

The object of my invention is to provide means for producing a uniformquality of combustible gas by the evaporation of liquid hydrocarbon,this being accomplished in my construction by providing for an extremelythorough and uniform distribution of air through the carhureting liquidand also by providing' accurate means for automatically regulating' thedepth of the carburetin g liquid.

In the following description reference is had to the accompanyingdrawings, in which-- Figure 1 is a sectional elevation of my invention.Fig. 2 is a plan view of the air-distributing' screen. Y

Like parts are identified by the same reference characters in bothviews.

1 is a carbureting-chamber in which a supply of carbureting liquid ismaintained at a uniform depth, the upper surface of the liquid beingindicated at 2.

3 is a liquid-supply tank located above the level of the liquid in thechamber l. The liquid is supplied from the tank 3 to the chamber 1through a pipe 4, which leads downwardly in chamber 1 to the liquidtherein, the pipe 4 being' connected with the tank 3 near its bottom. Acontrolling-pipe 5 leads from the upper portion of the tank 3 to thesurface of the liquid in chamber 1. l/Vhen the liquid in the chamber 1is lowered below the end of this pipe, air 0r gas is permitted to passupwardly in the pipe and the upper portion of tank 3, thus permittingliquid from the tank 3 to iow through pipeLI into chamber 1 until thelower end of the pipe 5 is sealed in the liquid, when the flow of liquidfrom the tank will be checked by the formation of a partial vacuum insaid tank. The pipes 4 and 5 are 'provided with valves 6 and are coiled,as indicated at a and Z), respectively, the lower ends of the pipesbeing secured to a block 7, which may be raised or lowered by means of arod 8, extending through the upper portion of the carbureting-chamber.IVith this construction the block 7 may be raised or lowered to vary theheight of the carbureting liquid in chamber 1, the coils L and t beingadapted to permit the pipes to yield sufciently for the desired purpose.The pipes may, if desired, be made of yielding material, such as lead.The upper end of the rod is passed through a tubular packing-box 9 andis engaged by an exterior end nut 10, the end of the rod beingscrew-threaded, so that by turning the nut the block 7 will be raised orlowered, as desired. An air-distributing screen 14 is located underneaththe surface of the carbureting liquid in chamber 1. This screen ispreferably corrugated annularly and is dished downwardly at the center,the under surface of the screens being convex or conical in generaloutline.

At one side of the screen series of perforations l5 are provided in theupwardly-projecting corrugations. Air under pressure is delivered to thechamber 1 from a receiver 17 by means of a pipe 18, which preferablyenters chamber 1 at the top and which passes downwardly through thecenter of the screen le and delivers the air into the carbureting liquidunderneath the screen. The lower end of the pipe 18 is preferablyrecessed, as shown at 19, on the side opposite the perforations 15,whereby the air is first delivered to the unperforated portions of thecorrugated screen and is thus caused to travel annularly in thecorrugations until the perforations are reached, when it is permitted topass upwardly through the liquid to the upper p01'- tion of the chamberl. If desired, however,

the perforations 15 may be uniformly distributed in a screen and the airdelivered from pipe 18 in all directions underneath the screen; but byproviding perforations on one side only and delivering the air to theother side a more complete distribution of air and more intimate contactwith the carbureting liquid is secured.

It will be observed that by using a corrugated screen the air issubdivided and pocketed in waves in the several corrugations, while byhaving the screen dished that portion of the air which reaches the outercorrugations is under a lighter pressure than the air nearest the tube18, which compensates for the increased distance it must travel. It willalso be observed that the air pockcted in the central corrugations mustnecessarily absorb the heavier portions of the liquid. This air travelsmore rapidly and under greater pressure than the air in the'outcrcorrugations, and there; fore vaporizes the heavier portion of the.liquid as well as the more volatile portions which are reached by theouter air-currents. The quality of the liquid is thus kept fromdeteriorating.

rlhe air-receiver 17 is of ordinary construction, comprising aninvertedbell C, adapted to reciprocate in a water-tank I) and provided with aweight E, regulating the pressure of the air. Air is supplied to thereceiver 17 by means of a supply-pipe 1(5,leading from an airpump or anyother suitable source of air-su pply. (Not shown.)

The chamber 1 is preferably provided with a lilter 2O in its upperportion` pulverized charcoal beingl preferred for this purpose. A screen21 supports the charcoal in position, and a service-pipe QQ leadsthrough the upper wall of the chamber from the space above the charcoal.It will be observed that the bottom of the chamber 1 is provided with adepression at 25, from which point a pipe 26 extends upwardly throughthe wall of the chamber 1 and'is provided with a valve 27. When it isdesired to clean out the liquid from chamber 1, a valve Q8 in theservice-pipe is closed and valve 27 opened, whereupon the pressure ofair and gas in chamber 1 is permitted to increase until the liquid isblown out through the pipe 26. rI`he bell C of receiver 17 may beadditionally weighted for this purpose if the pressure is foundinsufficient to, blow out the liquid.

In order that the depth of liquid in chamber 1 may be definitelyascertained at all times, I have provided a float 29, froln which anindi` eating-rod 30 extends upwardly into a tubular sight-glass whichprojects from the upper wall of the chamber 1 and is provided withgagemarks adapted to indicate the elevation of the float. This ioat andthe block 7 are inclosed in guide-tubes 33 and 34, respectively.

The guide-tube 33 prevents the ebullitions of the carbureting liquidfrom interfering with the lioat, while the tube 34; keeps the liq uidquiet at the mouths of the tubes 4 and 5, this being essential to anaccurate feed of liquid from tank 3.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is*- 1. In apparatus of the described class,the

combination of a earbureting-chamber; a supply-tank located above thebottom of said chamber; pipes leading from the upper and lower portionsof the sui'iply-tank respectively to points near the bottom of saidchamber; and means for supplying' air under pressure and delivering thesame at a point lower than the end of the pipe leading' from the upperportion of said tank, together with means for lraising and lowering thelower end of said last-mentioned pipe.

2. In apparatus of the described class, the

combination of a carbureting-chamber; a supply-tank located above thebottom of said chamber; pipes leading from the upper and lower portionsof the su pply-tank respectively to points near the bottom of saidchamber; and means for supplying air under pressure and delivering thesame at a point below the end of the pipes leading from the upperportion of said tank, said pipes being coiled within thecarbureting-chamber and provided with exterior connections whereby theirlower ends may be raised or lowered.

3. In apparatus of the described class, the combination of acarbureting-chamber; asupply-tank located above the bottom of saidchamber; pipes leading from the upper and lower portions of the supplytank respectively to points near the bottom of said chamber; and meansfor supplying air under pressure and delivering the same at a pointbelow the end of the pipes leading from the upper portion of said tank,together with a shield in closing the lower ends of said pipes andextending a substantial distance below the surface of the liquid in saidchamber.

4. In apparatus of the described class, the combination with acarbureting-chamber, and means for supplying the same with liquidhydrocarbon; of a perforated screen in the lower portion of thecarbureting-chamber and an air-supply pipe arranged to deliver airunderneath said screen; said screen being inclined upwardly from thepoint of air delivery IOO IIO

and provided with perforations at different radial distances from saidpoint; together with means for maintaining' a supply of carburetingliquid at a level in close proximity to the outer edges of the screen.

5. In apparatus of the described class, the combination with acarbureting-chamber, and means for supplying the same with liquidhydrocarbon; of a perforated screen in the lower portion of thecarbureting chamber and an air-supply pipe arranged to deliver airunderneath said screen; said screen being inclined upwardly from thepoint of air delivery and provided with perforations at different radialdistances from said point, said screen being also provided with channelsadapted to pocket the air in the perforated portions of the screen.

6. In apparatus of the described class, the combination with acarbmeting-chamber, and

@15am air-supply pipe arranged to deliver air i underneath said screen;said screen being inclined upwardly from the point of air delivery andprovided with perforations at different radial distances from saidpoint, together with a iioat in said chamber; an indicator-rod eX-tending from the iioat through wall of the chamber; and a shieldarranged to protect the iioat from surface movements of the liquid.

In testimony whereof I aifix my signature in the presence of twoWitnesses.

CHARLES L. MOHR.

Witnesses:

ARTHUR M. FISHER, .OTTO A. OEs'rREIoH.

